Table 1.
Preoperative patient demographics.
| Characteristic | Mean ± SD | Range | ICL V4c Group | FS-LASIK Group | P |
|---|---|---|---|---|---|
| Age(years) | 45.50 ± 3.82 | (40,54) | 43.75 ± 2.31 | 47.25 ± 4.21 | 0.033 |
| Gender(male/female) | 10/14 | 5/7 | 5/7 | 1.000 | |
| Axial length(mm) | 27.13 ± 2.12 | (23.98, 32.11) | 28.47 ± 2.10 | 26.45 ± 1.63 | 0.001 |
| Refraction sphere(D) | − 9.40 ± 3.90 | (− 19.00, − 2.25) | − 11.05 ± 3.42 | − 7.74 ± 3.69 | 0.002 |
| Refraction cylinder (D) | − 1.13 ± 0.93 | (− 3.25, 0) | − 1.49 ± 1.07 | − 0.77 ± 0.58 | 0.006 |
| SE (D) | − 9.96 ± 4.00 | (− 19.00, − 2.25) | − 11.80 ± 3.36 | − 8.13 ± 3.78 | 0.001 |
| CDVA (LogMAR) | − 0.03 ± 0.07 | (− 0.18, 0.22) | 0.05 ± 0.08 | − 0.01 ± 0.08 | 0.010 |
| Dominant eye (OD/OS) | 14/10 | NA | 6/6 | 8/4 | NA |
| ADD (D) | 1.02 ± 0.66 | (0.50, 2.50) | 0.71 ± 0.33 | 1.33 ± 0.77 | 0.017 |
| K-flat(D) | 43.57 ± 1.37 | (40.80, 46.60) | 43.34 ± 1.54 | 43.80 ± 1.15 | 0.254 |
| K-steep(D) | 44.68 ± 1.42 | (42.30, 47.20) | 44.96 ± 1.64 | 44.40 ± 1.14 | 0.174 |
| WTW (mm) | 11.86 ± 0.33 | (11.00, 12.40) | 11.79 ± 0.35 | 11.94 ± 0.28 | 0.134 |
SE, spherical equivalent; CDVA, corrected-distant visual acuity; ADD, presbyopic add power; WTW, white to white.
Values with statistical significance between ICL V4c group and FS-LASIK group are shown in bold.